3-Dimensional Christmas Card, "Joy to the World," circa 1952

Karl Koehler designed three-dimensional Christmas cards in the late 1940s and 1950s. He folded, scored, and snipped paper printed with his artwork, then assembled the cards in his studio. Koehler's creations folded flat for mailing, but when opened they brought unexpected joy with their pop-out shapes. Holiday shoppers found his line of "Mantelpiece" cards at high-end department stores throughout the country.